【进阶实战】Lua表合并：裁决之杖基础属性与强化叠加

local function equipAttr(actor, base, extra)
    base.extra = extra               -- 只挂引用，没真正合并
    setplayvar(actor, "ATK_ADD", base.atk)   -- 附加攻击丢失
end

local function mergeAttr(actor, base, extra)
    local out = {}
    for k, v in pairs(base) do out[k] = v end
    for k, v in pairs(extra) do
        if type(v) == "number" and type(out[k]) == "number" then
            out[k] = out[k] + v      -- 数值型累加
        else
            out[k] = v               -- 其他型覆盖
        end
    end
    setplayvar(actor, "ATK_ADD", out.atk)
    sendmsg(actor, 1, "裁决之杖攻击合计 " .. out.atk)
end